Inverse identification of unknown finite-duration air pollutant release from a point source in urban environment

Ivan V. Kovalets, George C. Efthimiou, Spyros Andronopoulos, Alexander G. Venetsanos, Christos D. Argyropoulos, Konstantinos Kakosimos

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this work, we present an inverse computational method for the identification of the location, start time, duration and quantity of emitted substance of an unknown air pollution source of finite time duration in an urban environment. We considered a problem of transient pollutant dispersion under stationary meteorological fields, which is a reasonable assumption for the assimilation of available concentration measurements within 1 h from the start of an incident. We optimized the calculation of the source-receptor function by developing a method which requires integrating as many backward adjoint equations as the available measurement stations. This resulted in high numerical efficiency of the method. The source parameters are computed by maximizing the correlation function of the simulated and observed concentrations. The method has been integrated into the CFD code ADREA-HF and it has been tested successfully by performing a series of source inversion runs using the data of 200 individual realizations of puff releases, previously generated in a wind tunnel experiment.

Original languageEnglish
Pages (from-to)82-96
Number of pages15
JournalAtmospheric Environment
Volume181
DOIs
Publication statusPublished - 1 May 2018

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point source
source parameters
pollutant source
wind tunnel
atmospheric pollution
air pollutant
method
experiment

Keywords

  • CFD model
  • Data assimilation
  • Hazardous pollutant
  • Source inversion
  • Source term estimation
  • Urban atmospheric dispersion

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

Cite this

Inverse identification of unknown finite-duration air pollutant release from a point source in urban environment. / Kovalets, Ivan V.; Efthimiou, George C.; Andronopoulos, Spyros; Venetsanos, Alexander G.; Argyropoulos, Christos D.; Kakosimos, Konstantinos.

In: Atmospheric Environment, Vol. 181, 01.05.2018, p. 82-96.

Research output: Contribution to journalArticle

Kovalets, Ivan V. ; Efthimiou, George C. ; Andronopoulos, Spyros ; Venetsanos, Alexander G. ; Argyropoulos, Christos D. ; Kakosimos, Konstantinos. / Inverse identification of unknown finite-duration air pollutant release from a point source in urban environment. In: Atmospheric Environment. 2018 ; Vol. 181. pp. 82-96.
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